A pipe welding auxiliary aligning device

Abstract

The utility model discloses a kind of pipeline welding auxiliary mouth-to-mouth appliance, including base, the base is by bottom plate, vertical plate in the back of bottom plate, and inclined plate of the front of bottom plate is formed, the inside of the base vertical plate is screwed and is penetrated with threaded lead screw, the front of threaded lead screw is rotatably connected with connecting plate, the front of connecting plate is fixedly installed with mounting plate;Through the cooperation of threaded lead screw, first clamping block and second clamping block, in combination with the elastic clamping structure of clamping ball and spring, the accurate positioning and stable fixation of different pipe diameter pipelines are realized.The rotation of screw handle drives threaded lead screw to advance, the spacing of first clamping block and second clamping block can be adjusted, and different specifications of pipeline are adapted;When pipeline extrusion clamping ball compresses spring, the spring elasticity can make clamping ball closely adhere to pipeline outer wall, both ensure fixed stability, and avoid pipeline surface damage, solve the problem that traditional appliance has poor adaptability and is not accurately positioned.

Description

Technical Field

[0001] This utility model relates to the field of pipeline welding technology, specifically a pipeline welding auxiliary alignment device. Background Technology

[0002] Pipeline welding is one of the core processes in industrial production, building construction, and municipal engineering. Its welding quality directly affects the sealing performance, pressure resistance, and service life of the pipeline system. In pipeline welding operations, the alignment process is crucial. It is essential to ensure that the end faces of the two pipes are precisely fitted and their axes are aligned to avoid problems such as misalignment or uneven gaps. Otherwise, it can lead to insufficient weld strength, easy corrosion, and leakage.

[0003] Current pipe alignment operations mostly rely on manual support and positioning, or use simple supports to support the pipes, which has obvious technical defects: when manually positioning, it is difficult for operators to keep the pipe stable for a long time, and the alignment is easily misaligned due to hand tremors; simple supports can only provide basic support and cannot meet the fixing requirements of pipes of different diameters, and lack precise limiting at the pipe end face contact point, making it difficult to control the alignment gap, which in turn affects the welding quality.

[0004] Therefore, this utility model provides a pipe welding auxiliary fitting tool to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a pipe welding auxiliary fitting tool, which solves the above-mentioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pipe welding auxiliary fitting device, comprising a base, the base consisting of a base plate, a vertical plate on the back of the base plate, and an inclined plate on the front of the base plate. A threaded rod is threaded through the interior of the vertical plate of the base, and a connecting plate is rotatably connected to the front of the threaded rod. An mounting plate is fixedly installed on the front of the connecting plate, and a first clamping block is fixedly installed on the front of the mounting plate. A second clamping block is fixedly installed on the top of the inclined plate of the base. The first and second clamping blocks are symmetrical to each other, and both have an arc-shaped structure on their opposite sides. Two pipes are clamped between the symmetrical first and second clamping blocks, with the end faces of the two pipes touching each other, and the touching part is located between the first and second clamping blocks. A groove that does not affect the welding operation is provided in the middle of both the first and second clamping blocks.

[0007] Preferably, a screw handle is fixedly installed on the back of the threaded screw, and the thread lead angle of the threaded screw is less than the equivalent friction angle.

[0008] Preferably, a limiting groove is provided on the top of the base plate, and a limiting support rod is fixedly installed on the bottom of the mounting plate, with the limiting support rod slidably connected inside the limiting groove.

[0009] Preferably, both the first clamping block and the second clamping block have a movable groove inside. The movable groove is arranged along the inner arc-shaped side of the first clamping block and the second clamping block. A clamping ball is inserted into the movable groove. A spring is fixedly installed between the clamping ball and the inner wall of the movable groove. The outer end of the clamping ball is attached to the outer wall of the pipe. By squeezing the spring and the clamping ball through the pipe, the pipes of different diameters are fixed.

[0010] Preferably, a support plate is fixedly installed on the front of the limiting support rod, a support block is fixedly installed on the top front end of the support plate, a soft pad is fixedly installed on the top of the support block, and the soft pad is attached to the bottom of the joint of the two pipe end faces.

[0011] Preferably, the tray has a telescopic function to ensure that the tray can accurately fit the bottom of pipes of different diameters. Beneficial effects

[0012] This utility model provides an auxiliary fitting tool for pipe welding. Compared with the prior art, it has the following advantages: (1) This pipe welding auxiliary fitting tool, through the cooperation of the threaded screw, the first clamping block and the second clamping block, combined with the elastic clamping structure of the clamping ball and the spring, realizes the precise positioning and stable fixation of pipes of different diameters. Turning the handle drives the threaded screw to advance, and the distance between the first clamping block and the second clamping block can be adjusted to adapt to pipes of different specifications. When the pipe squeezes the clamping ball to compress the spring, the spring's rebound force can make the clamping ball fit tightly against the outer wall of the pipe, which not only ensures the stability of the fixation, but also avoids damage to the pipe surface, thus solving the problems of poor adaptability and inaccurate positioning of traditional tools.

[0013] (2) The pipe welding auxiliary alignment tool, through the sliding cooperation of the limiting groove and the limiting support rod, combined with the telescopic tray and soft pad support structure, improves the accuracy and convenience of the alignment operation. The limiting support rod slides along the limiting groove, which can ensure that the first clamping block is always aligned with the second clamping block during the translation process, and avoids pipe deviation. The telescopic tray can adapt to the support requirements of pipes of different diameters. The soft pad not only plays a buffer protection role, but also limits the bottom of the pipe end face contact, ensuring uniform alignment gap, while simplifying the operation process and improving the welding operation efficiency. Attached Figure Description

[0014] Figure 1 This is a perspective view of the external structure of this utility model; Figure 2 This is a three-dimensional view of the overall structure of this utility model from another perspective; Figure 3 This is a three-dimensional view of the internal structure of the first clamping block of this utility model; Figure 4 This is a three-dimensional view of the matching structure of the limiting support rod and the limiting groove of this utility model; Figure 5 This is a side view of the structure of this utility model; Figure 6 This is the utility model Figure 5 Enlarged view of the structure at point A in the middle.

[0015] In the picture: 1. Base; 2. Pipe; 3. Limiting groove; 4. Threaded screw; 5. Tightening handle; 6. Limiting support rod; 7. Connecting plate; 8. Mounting plate; 9. First clamping block; 10. Second clamping block; 11. Support plate; 12. Support block; 13. Soft pad; 14. Moving groove; 15. Spring; 16. Clamping ball. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1 - Figure 6 A pipe welding auxiliary fitting device includes a base 1, which consists of a base plate, a vertical plate on the back of the base plate, and an inclined plate on the front of the base plate. A threaded rod 4 is threaded through the interior of the vertical plate of the base 1. A connecting plate 7 is rotatably connected to the front of the threaded rod 4. An mounting plate 8 is fixedly installed on the front of the connecting plate 7. A first clamping block 9 is fixedly installed on the front of the mounting plate 8. A second clamping block 10 is fixedly installed on the top of the inclined plate of the base 1. The first clamping block 9 and the second clamping block 10 are symmetrical to each other, and the interior of their opposite sides is arc-shaped. Two pipes 2 are clamped between the first clamping block 9 and the second clamping block 10. The end faces of the two pipes 2 are in contact with each other, and the contact part is located between the first clamping block 9 and the second clamping block 10. The middle of the first clamping block 9 and the second clamping block 10 is provided with a groove that does not affect the welding operation.

[0018] Please see Figure 1 and Figure 2 In one optional embodiment: a handle 5 is fixedly mounted on the back of the threaded screw 4, and the thread lead angle of the threaded screw 4 is less than the equivalent friction angle.

[0019] It should be noted that the design of the thread lead angle being smaller than the equivalent friction angle gives the threaded screw 4 a self-locking performance. After tightening the handle 5 and pushing the first clamping block 9 to clamp the pipe 2, the threaded screw 4 will not loosen due to the reaction force of the pipe 2 or external vibration. It can maintain the clamped state without the need for an additional locking structure, ensuring the stability of the pipe 2 during the welding process and improving the alignment accuracy.

[0020] Please see Figure 1 and Figure 2 In one optional embodiment: a limiting groove 3 is formed on the top of the base plate of the base 1, and a limiting support rod 6 is fixedly installed on the bottom of the mounting plate 8. The limiting support rod 6 is slidably connected inside the limiting groove 3.

[0021] It should be noted that when the first clamping block 9 is adjusted by turning the handle 5, the limiting support rod 6 at the bottom of the mounting plate 8 will slide synchronously along the limiting groove 3. The limiting groove 3 constrains the movement trajectory of the limiting support rod 6 to prevent the first clamping block 9 from shifting or tilting during translation, ensuring that the first clamping block 9 and the second clamping block 10 always maintain symmetrical alignment, and ensuring that the axes of the two pipes 2 are precisely coincident.

[0022] Please see Figure 5 and Figure 6 In one optional embodiment: both the first clamping block 9 and the second clamping block 10 have a moving groove 14 inside, and the moving groove 14 is arranged along the arc-shaped side of the inside of the first clamping block 9 and the second clamping block 10; a clamping ball 16 is inserted into the moving groove 14, and a spring 15 is fixedly installed between the clamping ball 16 and the inner wall of the moving groove 14. The outer end of the clamping ball 16 is attached to the outer wall of the pipe 2, and the pipe 2 is squeezed to compress the spring 15 and the clamping ball 16 to fix the pipe 2 of different diameters.

[0023] It should be noted that when the pipe 2 is placed, the outer wall of the pipe 2 will squeeze the clamping ball 16, causing the clamping ball 16 to contract into the moving groove 14 and compress the spring 15. The rebound force of the spring 15 will push the clamping ball 16 to fit tightly against the outer wall of the pipe 2, forming a multi-point elastic clamping. This not only ensures the fixing reliability of pipes 2 with different diameters, but also avoids damage to the surface of the pipe 2 caused by rigid clamping. At the same time, the arc-shaped moving groove 14 and the clamping ball 16 can adapt to the arc-shaped outer wall of the pipe 2, improving the clamping stability.

[0024] Please see Figure 5 In one optional embodiment: a support plate 11 is fixedly installed on the front of the limiting support rod 6, a support block 12 is fixedly installed on the top front end of the support plate 11, a soft pad 13 is fixedly installed on the top of the support block 12, and the soft pad 13 is attached to the bottom of the joint of the two pipes 2 end faces.

[0025] It should be noted that the support plate 11 and the support block 12 provide bottom support for the joint of the pipe 2 end face, preventing the joint from sinking due to the weight of the pipe 2 itself, and ensuring a uniform gap between the joints. The soft pad 13 is made of elastic material, which can not only buffer the pressure between the pipe 2 and the support block 12 and prevent scratches on the surface of the pipe 2, but also increase the contact friction and further improve the stability of the pipe 2.

[0026] Please see Figure 5 In an optional embodiment: the tray 11 has a telescopic function to ensure that the tray 11 can accurately fit the bottom of pipes 2 with different diameters. It should be noted that for pipes 2 with different diameters, the extension length of the support plate 11 can be adjusted to ensure that the soft pad 13 on the support block 12 always fits precisely with the bottom of the pipe 2 end face, ensuring stable bottom support regardless of the pipe diameter, avoiding support shift due to pipe diameter changes, and ensuring the universality and accuracy of the matching operation.

[0027] Furthermore, any content not described in detail in this specification is prior art known to those skilled in the art. Working principle: During operation, firstly, adjust the extension length of the support plate 11 according to the pipe diameter of pipe 2, so that the soft pad 13 on the support block 12 is in a suitable support position; place the two pipes 2 to be welded between the first clamping block 9 and the second clamping block 10, so that the end faces of the two pipes 2 are in contact with each other, and the contact part is above the soft pad 13; turn the handle 5 to drive the threaded rod 4 to advance forward, and the threaded rod 4 pushes the mounting plate 8 and the first clamping block 9 towards the second clamping block 10 through the connecting plate 7; during this process, the limiting support rod at the bottom of the mounting plate 8... 6. Slide along the limiting groove 3 of the base 1 to ensure the smooth translation of the first clamping block 9. As the distance between the first clamping block 9 and the second clamping block 10 decreases, the clamping ball 16 compresses the spring 15 under the pressure of the outer wall of the pipe 2. The rebound force of the spring 15 makes the clamping ball 16 fit tightly against the outer wall of the pipe 2, thus fixing the pipe 2. After tightening the handle 5, the self-locking function of the threaded screw 4 is used to maintain the clamping state, and subsequent welding operations can be carried out. After welding is completed, rotate the handle 5 in the opposite direction to drive the first clamping block 9 to move backward, release the fixation of the pipe 2, and take out the welded pipe 2.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pipe welding auxiliary fitting device, comprising a base (1), wherein the base (1) is composed of a base plate, a vertical plate on the back of the base plate, and an inclined plate on the front of the base plate, characterized in that: The vertical plate of the base (1) is threaded through a threaded rod (4). The front of the threaded rod (4) is rotatably connected to a connecting plate (7). The front of the connecting plate (7) is fixedly installed with an mounting plate (8). The front of the mounting plate (8) is fixedly installed with a first clamping block (9). The top of the inclined plate of the base (1) is fixedly installed with a second clamping block (10). The first clamping block (9) and the second clamping block (10) are symmetrical to each other, and the interior of their opposite sides is set with an arc structure. The first clamping block (9) and the second clamping block (10) are symmetrical to each other, and the end faces of the two pipes (2) are in contact with each other. The contact part is located between the first clamping block (9) and the second clamping block (10). The middle of the first clamping block (9) and the second clamping block (10) is provided with a groove that does not affect the welding operation.

2. The pipe welding auxiliary fitting device according to claim 1, characterized in that: A handle (5) is fixedly installed on the back of the threaded screw (4), and the thread lead angle of the threaded screw (4) is less than the equivalent friction angle.

3. The pipe welding auxiliary fitting device according to claim 1, characterized in that: The base (1) has a limiting groove (3) on the top of the base plate, and a limiting support rod (6) is fixedly installed on the bottom of the mounting plate (8). The limiting support rod (6) is slidably connected inside the limiting groove (3).

4. The pipe welding auxiliary fitting device according to claim 1, characterized in that: The first clamping block (9) and the second clamping block (10) are both provided with a moving groove (14). The moving groove (14) is arranged along the inner arc-shaped side of the first clamping block (9) and the second clamping block (10). A clamping ball (16) is inserted into the moving groove (14). A spring (15) is fixedly installed between the clamping ball (16) and the inner wall of the moving groove (14). The outer end of the clamping ball (16) is attached to the outer wall of the pipe (2).

5. The pipe welding auxiliary fitting device according to claim 3, characterized in that: The front of the limiting support rod (6) is fixedly installed with a tray (11), and the top of the front end of the tray (11) is fixedly installed with a support block (12). The top of the support block (12) is fixedly installed with a soft pad (13), and the soft pad (13) is attached to the bottom of the joint of the two pipe (2) ends.

6. The pipe welding auxiliary fitting device according to claim 5, characterized in that: The tray (11) has a telescopic function to ensure that the tray (11) can accurately fit the bottom of pipes (2) of different diameters.

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